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-rw-r--r--drivers/base/platform.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/base/platform.c b/drivers/base/platform.c
index c0b8df38402..ef2afb1e33e 100644
--- a/drivers/base/platform.c
+++ b/drivers/base/platform.c
@@ -555,7 +555,8 @@ EXPORT_SYMBOL_GPL(platform_driver_unregister);
/**
* platform_driver_probe - register driver for non-hotpluggable device
* @drv: platform driver structure
- * @probe: the driver probe routine, probably from an __init section
+ * @probe: the driver probe routine, probably from an __init section,
+ * must not return -EPROBE_DEFER.
*
* Use this instead of platform_driver_register() when you know the device
* is not hotpluggable and has already been registered, and you want to
@@ -566,6 +567,9 @@ EXPORT_SYMBOL_GPL(platform_driver_unregister);
* into system-on-chip processors, where the controller devices have been
* configured as part of board setup.
*
+ * This is incompatible with deferred probing so probe() must not
+ * return -EPROBE_DEFER.
+ *
* Returns zero if the driver registered and bound to a device, else returns
* a negative error code and with the driver not registered.
*/